Ferson Pond Dam is an earth dam located in Grafton County, New Hampshire, built in 1998. It carries a Low hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 7 ft7 ft tall and 200 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Ferson Pond Dam
The primary purpose of Ferson Pond Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Ralph and Susan Carlton (private). It impounds the Tr Hewes Brook near Hanover.
The dam stands 7 feet tall and stretches 200 feet across, creates a reservoir covering 11 acres, has a maximum storage capacity of 53 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1998, the structure is 28 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 11/03/2022.
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Location
| State | New Hampshire |
| County | Grafton |
| Nearest City | Hanover |
| River/Stream | Tr Hewes Brook |
| Coordinates | 43.71556, -72.19101 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 7 ft |
| Dam Height | 7 ft |
| Dam Length | 200 ft |
| Year Completed | 1998 (28 years old) |
Storage & Hydraulics
| NID Storage | 53 acre-ft |
| Max Storage | 53 acre-ft |
| Normal Storage | 18 acre-ft |
| Surface Area | 11 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 220 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Ralph and Susan Carlton |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 11/03/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NH01054 |
| Federal ID | NH01054 |
| More Info | State Dam Safety Program |